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Thread: Fault code P0170

  
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    Fault code P0170

    P0170 = Fuel trim malfunction.

    Hi guys,

    what is the cause of this fault?
    I clear the code every time and a few days later it pops up.

    There's some threads on C20LET forum, but I don't understand ...
    http://www.c20let-forum.de/viewtopic...ighlight=p0170

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    It's the fuel being either too much or too less.
    Maybe worth checking out the following which I found:

    "This probably won't help much, but the listed probable causes for this fault code are,
    -Intake leak
    -Air system
    -Fuel pressure/pump
    -Injector(s)
    -EVAP canister purge valve
    -H2O sensor"


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    according to some answer from c20let forum, it seems that 99% of time the problem is related to a defective air mass meter.

    how much is this spare part? someone knows ?

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